Self-threading shuttle.



R. N. ALLEN.

SELF THREADING SHUTTLE. APPLICATION FILED JULY 6, 1914.

1 ,11 26,338, Paienteoi Jan. 26, 1915.

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ROBERT 1\T. ALLEN, 0F METHUEN, MASSACHUSETTS, ASSIGNOR TO U. S. BOBBIIN'& SHUTTLE COMPANY, OF PROVIDENCE, RI-IOIDE ISLAND, A CORPORATION OF NEWJERSEY.

SELF-THREADING SHUTTLE.

menses.

Specification of Letters Patent.

Patented Jan. 26, 1915.

To all whom it may concern:

Be it known that I, ROBERT N. ALLEN, a citizen of the United States,residing at Methuen, in the county of Essex and State of Massachusetts,have invented a new and useful Improvement in Self -Threading Shuttles,of which the following is a specification.

This invention relates to certain new and useful improvements in selfthreading shut tles.

The primary object of the invention is to provide improved means forautomatically drawing the thread into the delivery eye, which means canbe economically produced, easily positioned with relation to theshuttle, and which will effectively retain the thread against accidentaldisengagement.

till further, the invention aims to provide a shuttle threading meanswhich enables the threading operation to be easily and quicklyperformed.

In the drawings Figure 1 is a top plan view of the invention in positionin a shuttle, the latter being illustrated in fragment. Fig. 2 is alongitudinal vertical sectional view of Fig. 1. Fig. 3 is a sectiontaken on the line 33 of Fig. 2, and Fig. i is a plan view of the blankfrom which the body of the threading device is formed.

In proceeding in accordance with the invention, a sheet metal blank ofthe form depicted in Fig. i of the drawings is folded along the lines aand b to produce a body portion which has a bottom 1 and parallel sides2 and 8. The side 2 which has a contracted extension of the form shownin Fig. at is then folded on the lines 0 and d to produce a top part orroof 4: and a depending part 5, the latter being provided with arearwardly directed pointed finger 8, the point of which projectsslightly into an aperture 9 provided therefor, in the side 3 of the device. The side 3 also has an extension 6 that is bent to lie parallel tothe bottom 1 and is bent over at 11 on the line 6 to bite into the woodof the shuttle body at the inner side of the usual diagonal slot 12'which latter leads to the delivery eye. The extension 6 thus acts tofirmly secure the device in position with relation to the shuttle. Side3 has a pointed finger 12 which extends forwardly thereof and projectsslightly into an aperture provided for its reception in the dependingpart 5 of the device. The side 3 also has a thread opening 14: which isguarded by a finger 15 which latter extends above and in spaced relationto the bottom 1, as illustrated in Fig. 2 of the drawings. Holes 16 and17 register and are formed in the sides 2 and 3 respectively to receivea screw 17 which further secures the device n the shuttle throat, thescrew 17 also passlng through a thread guide block 18, which is of awidth to be received in the space between the sides 2 and 3. The block18 has a horizontal channel 19 which terminates in a vertical end 20 soas to allow the thread to be drawn down and through the opening 14, asshown in Fig. 2 of the drawings. Vertical pins 21 and 21 are positionedadjacent to the delivery eye E of the shuttle so that the thread mayengage the same and thus prevent wear on the wood which defines thedelivery eye. The depending part 5 .where the same has the aperture 13formed therein is bent outwardly as indicated at 22 in Fig. 1 of thedrawings, in order to provide a guard for the finger 12, since thethread in order to pass the finger 12 will need be first moved up andover part 22, and then under finger 12 and up past same, which part 22,by its stated disposition, thus provides an effective guard for finger12, which will positively prevent accidental movement of the threadtherepast, and in addition since the part 22 extends in a plane abovethe plane in which the finger 8 extends, it will be evident that thethread will be effectively prevented from being accidentally disengaged.

In operation, the thread is placed in the vertical thread passage thatthe space which exists between the part 5 and side 3 provides and isthen moved downwardly under finger 8, then under finger 12, and underfinger 15, and out through the delivery eye, whereby it will be evidentthat the thread is securely held against accidental disengagement. Sincethe fingers 8 and 12 project slightly into their respective apertures,it will be apparent that the thread is thus prevented from passing thefingers except with the expenditure of force to effect such passage.

Having thus described my invention, I

claim as new and desire to secure by Letters Patent I 1. In a selfthreading shuttle, a U-shaped body one side of which is extended to forma top the free end of which top depends downwardly in spaced relation tothe opposite side, a rearwardly extending finger on the rear end of saiddepending part and an outwardly projecting part formed with an apertureon said depending part, said opposite side having an aperture in whichthe tip of said finger projects, and also having a finger at its frontwhich extends in said outwardly projecting part, said fingers beinglocated one above the other, said opposite side having a downwardly bentpart which bites into the shuttle, and a channeled guide block locatedbetween the sides and below the first named finger, said opposite sidehaving a thread hole and a finger which guards said hole and is locatedabove the bottom of the body in spaced relation thereto.

2. In a hand threading shuttle, a U-shaped body one side of which isextended and formed to provide a top located in the space between thesides and a depending part which is located in spaced relation to theopposite side, said depending part and said opposite side havingapertures which are located one above the other, a finger on theopposite side which extends into the aperture of the depending part anda finger on the depending part which extends into the aperture of saidopposite side.

3. In a hand threading shuttle, a U-shaped body having a top part whichis formed with a depending portion that forms a thread passage inconjunction with the inner face of one of the sides of the body, andmeans at opposite ends of the body located on said depending portion andon said side of the body to guard said passage to prevent movement ofthe thread upwardly thereout.

4. In a hand threading shuttle, a U-shaped body having a top part whichis formed with a depending portion that forms a thread passage inconjunction with the inner face of one of the sides of the body, saidside of the body being formed with a de livery opening and a guardfinger, and said depending portion and said side of the body havingopenings and guard fingers respectively which latter extend in theopenings, the last named guard fingers being located on opposite sidesof the delivery opening.

In testimony whereof I have signed my name to specification in thepresence of two subscribing witnesses.

ROBERT N. ALLEN.

Witnesses:

ALBION G. PEIRCE, ALICE F. HORNE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

